公开(公告)号：KR1020030086731A

公开(公告)日：2003-11-12

申请号：KR1020020024857

申请日：2002-05-06

Applicant: 국방과학연구소

Inventor： 이성 ,  홍문희 ,  노준웅 ,  김은표 ,  박윤식

IPC: C23C24/08

CPC classification number: C23C26/00

Abstract: PURPOSE: A method for simply coating tungsten on a metal substrate using transport phenomena of tungsten through vapor phase when reducing tungsten oxide powder without using of existing chemical vapor deposition or physical vapor deposition is provided. CONSTITUTION: The method comprises the processes of applying tungsten oxide powders on a metal substrate; and coating a thin tungsten film on the metal substrate by reducing the tungsten oxide powder applied on the metal substrate at a temperature of 650 deg.C in hydrogen atmosphere, wherein the metal substrate is a substrate formed of a metal selected from copper, iron, nickel, chromium and tungsten, and wherein the coating process is performed by heat treating the tungsten oxide powder in the temperature range of 650 to 1,050 deg.C for 10 minutes to 6 hours so that a thin tungsten film is formed on the metal substrate to a thickness of 500 nm to 25 μm.

Abstract translation: 目的：提供在不使用现有的化学气相沉积或物理气相沉积的情况下，在不使用氧化钨粉末的情况下，通过气相的钨的传输现象简单地在金属基底上涂覆钨的方法。 构成：该方法包括在金属基底上施加氧化钨粉末的方法; 通过在氢气氛中在650℃的温度下还原施加在金属基板上的氧化钨粉末，在金属基板上涂覆薄钨膜，其中，金属基板是由选自铜，铁， 镍，铬和钨，并且其中通过在650至1050℃的温度范围内热处理氧化钨粉末10分钟至6小时来进行涂覆工艺，使得在金属基板上形成薄的钨膜至 厚度为500nm至25μm。

公开(公告)号：KR101266040B1

公开(公告)日：2013-05-21

申请号：KR1020110117771

申请日：2011-11-11

Applicant: 국방과학연구소

Inventor： 남병욱 ,  이호정 ,  조성훈 ,  기태석 ,  박윤식

IPC: H02K11/00 ,  G01R31/34

Abstract: PURPOSE: A method for predicting the air gap variation of a direct drive motor and an apparatus thereof are provided to secure accurate speed and improve response speed. CONSTITUTION: An initial air gap between a rotor and a stator is measured. An input vector is defined in a mathematical model. Current and voltage applied to a motor are measured. A luenberger observer is designed. The change of the air gap is estimated by extracting the displacement of the rotor. [Reference numerals] (AA) X axis; (BB) Y axis; (CC) Rotor; (DD) Stator

Abstract translation: 目的：提供一种用于预测直接驱动电机的气隙变化的方法及其装置，以确保准确的速度并提高响应速度。 构成：测量转子和定子之间的初始气隙。 输入向量在数学模型中定义。 测量施加到电动机的电流和电压。 设计了一个luenberger观察者。 通过提取转子的位移来估计气隙的变化。 （标号）（AA）X轴; （BB）Y轴; （CC）转子; （DD）定子

公开(公告)号：KR100468215B1

公开(公告)日：2005-01-26

申请号：KR1020020024857

申请日：2002-05-06

Applicant: 국방과학연구소

Inventor： 이성 ,  홍문희 ,  노준웅 ,  김은표 ,  박윤식

IPC: C23C24/08

CPC classification number: C23C26/00

Abstract: Disclosed is a tungsten film coating method using tungsten oxide powders including the steps of contacting the tungsten oxide powders with a metal substrate and carrying out thermal reduction treatment thereon at a temperature of at least 650° C. under a hydrogen atmosphere just to coat the tungsten film on the metal substrate. Accordingly, the present invention enables to provide a simple method of coating a tungsten thin film on a metal substrate using the phenomenon of tungsten migration through vapor phase when thermal reduction treatment is carried out on tungsten oxide powders without using previous chemical or physical vapor depositions requiring expensive precision equipments or causing environmental pollution.

Abstract translation: 公开了一种使用氧化钨粉末的钨膜涂布方法，包括以下步骤：使氧化钨粉末与金属基材接触，并在至少650℃的温度下对其进行热还原处理; C.在氢气气氛下仅涂布金属基材上的钨膜。 因此，本发明能够提供一种简单的方法，当在钨氧化物粉末上进行热还原处理时，使用通过气相钨移动的现象在金属基底上涂覆钨薄膜，而无需使用先前的化学或物理气相沉积 昂贵的精密设备或造成环境污染。